<template>
  <div id="app">
    <div class="left"></div>
    <div class="center"></div>
    <div class="right"></div>
  </div>
</template>

<script>
// import HelloWorld from "./components/HelloWorld.vue";

export default {
  name: "App",
  components: {

  },
};
</script>

<style lang="less" scoped>
#app{
  display: flex;
  width: 100%;
  height: 100vh;
  .left{
    flex: 1;
    background-color: aqua;
  }
  .center{
    flex: 1;
    background-color: black;
  }
  .right{
    flex: 1;
    background-color: blue;
  }
}
</style>
